When we do PVC extrusion, according to customer required PVC profile customization requirements to design, and needed to formulate formula, recipe this is particularly important.
Let's talk about what should pay attention to when PVC profile formula:
Rigid polyvinyl chloride (PVC) plastic PVC profile is usually with little or no increase adhesive plastic, this will lead to a hard polyvinyl chloride (PVC) plastic liquidity is poor.
And in forming process and plastic in the viscous flow form, so that the plastic has a certain level of liquidity, it is important to improve the forming temperature.
But the forming temperature is a certain degree of ascension.
If beyond the melting temperature of PVC plastic can not all the normal operation.
Make plan, therefore, in the formula, be sure to take into account the hard PVC forming temperature and melting temperature characteristic of press close to, as far as possible, adopt effective methods to fill this one defect.
Polyvinyl chloride (PVC) plastic secret recipe of each component has a certain correlation with each other, can not independently options.
When choosing modifier, should be comprehensive considered to each level factors.
By considering the physical performance index is not separate elements change, often influence each other, each other.
To improve PVC impact resistance, plus sulfur rubber or ductile polymer is useful, but can lead to strain rate, stiffness and low temperature resistance.
For example, in order to improve the temperature resistance of PVC, chloride can improve the glass transition of PVC.
Melting temperature is relatively ascension, however, to make the process performance and liquidity significantly worse.
A recipe is good or bad should take the physical performance index of products for leading, but the physical performance index and depends on the application of different working environment and standards, for example, on the basis of the window in the room, outdoor application environment, color, size, and the physical properties of the specified parameter values also has the certain difference.
Rigid PVC resin with other thermosetting plastic more, its physical performance indexes and production and processing characteristics by the formula of additives, mixing rubber production and processing and forming technical standard correlation is very big, the formula of hard PVC extrusion plastic is a complex and key steps.
Sanders' secret recipe for hard PVC plastic made from PVC resin, thickening agent, flame retardant agent, lubricant, filler, coloring agent and so on more than 10 kinds of preservatives mixed configuration, and adopt preservative types, agent is not the same as the number of can piece together the performance characteristics of different formulations, to infer the pluralism of PVC extrusion plastic formula.
so, after established the hard PVC plastic characteristic features, must clearly formula, the effect of each component in scientific research include forming production and processing all within standard management system, to carry out a comprehensive resolution can get all kinds of performance parameters of PVC profile.
well da plastic products factory focus on PVC profile customization for 20 years, to solve relevant problems about the PVC profile for you.